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When I run sudo apt-get upgrade, the following error arises:

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages have been kept back:

  mysql-client-5.5 mysql-server-5.5 mysql-server-core-5.5

The following packages will be upgraded:

  accountsservice apport apt apt-transport-https apt-utils aptitude bash bash-completion bind9-host curl dbus dmsetup dnsutils icedtea-6-jre-cacao

  icedtea-6-jre-jamvm iptables isc-dhcp-client isc-dhcp-common language-selector-common libaccountsservice0 libapt-inst1.4 libapt-pkg4.12 libasound2

  libbind9-80 libc-bin libc-dev-bin libc6 libc6-dev libcups2 libcupsimage2 libcurl3 libcurl3-gnutls libdbus-1-3 libdevmapper1.02.1 libdns81

  libdrm-intel1 libdrm-nouveau1a libdrm-radeon1 libdrm2 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libgnutls26 libisc83 libisccc80 libisccfg82

  liblwres80 libmysqlclient-dev libmysqlclient18 libnspr4 libnss3 libnss3-1d libplymouth2 libservlet2.5-java libssl-dev libssl-doc libssl1.0.0

  libtiff4 libtomcat6-java libudev0 libx11-6 libx11-data libx11-xcb1 libxcb-glx0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb1 libxext6

  libxfixes3 libxi6 libxinerama1 libxml2 libxrender1 libxslt1.1 libxt6 libxtst6 libxv1 libxxf86dga1 libxxf86vm1 linux-libc-dev multiarch-support

  mysql-client mysql-client-core-5.5 mysql-common mysql-server nginx nginx-common nginx-full openjdk-6-jre-headless openjdk-6-jre-lib openssh-client

  openssh-server openssl perl perl-base perl-modules plymouth plymouth-theme-ubuntu-text python-apport python-apt python-apt-common python-mysqldb

  python-paramiko python-problem-report rsyslog tomcat6 tomcat6-admin tomcat6-common tomcat6-docs tomcat6-examples udev

112 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

Need to get 0 B/88.4 MB of archives.

After this operation, 204 kB of additional disk space will be used.

Do you want to continue [Y/n]? y

Extracting templates from packages: 100%

Preconfiguring packages ...

dpkg-deb: error: subprocess tar was killed by signal (Segmentation fault), core dumped

dpkg: error processing /var/cache/apt/archives/bash_4.2-2ubuntu2.1_i386.deb (--unpack):

 subprocess dpkg-deb --control returned error exit status 2

No apport report written because MaxReports is reached already

Errors were encountered while processing:

 /var/cache/apt/archives/bash_4.2-2ubuntu2.1_i386.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)

I tried sudo apt-get clean && sudo apt-get --reinstall install bash, and it outputs:

Reading package lists... Done

Building dependency tree

Reading state information... Done

Suggested packages:

  bash-doc

The following packages will be upgraded:

  bash

1 upgraded, 0 newly installed, 0 to remove and 114 not upgraded.

Need to get 616 kB of archives.

After this operation, 12.3 kB disk space will be freed.

Get:1 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main bash i386 4.2-2ubuntu2.1 [616 kB]

Fetched 616 kB in 1s (591 kB/s)

dpkg-deb: error: subprocess tar was killed by signal (Segmentation fault), core dumped

dpkg: error processing /var/cache/apt/archives/bash_4.2-2ubuntu2.1_i386.deb (--unpack):

 subprocess dpkg-deb --control returned error exit status 2

Errors were encountered while processing:

 /var/cache/apt/archives/bash_4.2-2ubuntu2.1_i386.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)

My problem seems to be with the bash package as alaa said.

Your problem is with the bash package that's in the cache. Here's what you can try:

1. Do sudo apt-get clean.


2. Do sudo apt-get --reinstall install bash
   


3. If it installs successfully, do sudo apt-get update, then do sudo apt-get upgrade.

Probably this helps:

sudo apt-get update --fix-missing

then this:

sudo apt-get dist-upgrade

This may be due to a broken dpkg system. Try this.

1. sudo dpkg --configure -a


2. sudo apt-get upgrade

I hope this helps!

Open the Terminal and do:

sudo apt-get install -f

Then:

sudo apt-get update

I had the same problem and tried dozens of solutions I have found online but nothing worked. In the end, this is what fixed it for me:

sudo touch /forcefsck

sudo shutdown -rF now

As seen here: https://askubuntu.com/a/47974

The tar binary file is corrupted and you can validate this by running:

tar --help

and you get segmentation fault, core dumped.

you should replace the /bin/tar binary with a healthy tar file from another host.